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  1. Prepare
  2. Algorithms
  3. Implementation
  4. Counting Valleys
  5. Discussions

Counting Valleys

  • chris_min216
     + 8 comments

    Javascript. This one was fun!

    function countingValleys(n, s) {
    let seaLevel = 0;
    let currLevel = 0;
    let valleys = 0;
    
    s = s.split('');
    for (let i = 0; i < s.length; i++) {
        //update the current level
        if (s[i] === 'U') {
            currLevel += 1;
            if (currLevel == 0) {
                valleys += 1;
            }
        } else {
            currLevel -= 1;
        }
        
        
    }
    
    return valleys;

}